Search Results - (Author, Cooperation:C. Flint)

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  1. 1
    Staff View
    Publication Date:
    2013-11-30
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    *Access to Information ; Periodicals as Topic/*economics ; Research/*economics
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Flint, C.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0962-6298
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Geography
    Political Science
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0962-6298(93)90039-A

    Articles: DFG German National Licenses
  3. 3
    Acevedo, R. ; Diaz, G. ; Vasquez, S. O. ; Flint, C. D.
    Springer
    Published 1991
    Staff View
    ISSN:
    1432-2234
    Keywords:
    Vibronic intensities ; Vibrational coordinates ; Crystal field ; Ligand polarization ; Complex ion
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Chemistry and Pharmacology
    Notes:
    Summary A reexamination of the vibrational coordinates appropriate in vibronic intensity calculations in octahedral coordination compounds is presented. We derive a complete set of symmetry coordinates that is orthonormal and transforms correctly under the group generators. The vibronic hamiltonian for the crystal field and ligand polarization contributions to the intensity are calculated in the basis of these coordinates. The crystal field term is evaluated both using a truncated basis set for the intermediate electronic states and using the closure approximation. These methods have been applied to the calculation of the vibronic intensity distribution for the4 A 2g ↔2 E g transition of the MnF 6 2− ion and close agreement wtih experiment achieved.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01114693

    Articles: DFG German National Licenses
  4. 4
    Staff View
    ISSN:
    1432-2234
    Keywords:
    Vibronic intensities ; Lanthanide ions ; Crystal Field ; Ligand Polarization ; Complex ions
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Chemistry and Pharmacology
    Notes:
    Summary A theoretical model to calculate the vibronic intensities induced by the odd vibrational modes in centrosymmetric lanthanide complexes is developed and applied to octahedral complex ions, LnX 6 3− , such as occur in the hexachloroelpasolites Cs2NaLnCl6. Both the crystal field and the ligand polarisation contributions are evaluated using a standard set of symmetry coordinates. For the crystal field term a truncated expansion of the intermediates states is employed rather than the more conventional closure approximation. Special care is necessary to ensure that the phases of the contributions are correctly determined since the cross-term between the ligand polarisation and crystal field contributions is signed. General equations applicable to anyf n complex ion are derived and an example of their application to the PrCl 6 3− ion is given The agreement with experiment is satisfactory.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01114783

    Articles: DFG German National Licenses
  5. 5
    Acevedo, R. ; Flint, C. D.
    Springer
    Published 1986
    Staff View
    ISSN:
    1432-2234
    Keywords:
    Vibronic intensities ; Crystal field ; Ligand polarization ; Complex ion
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Chemistry and Pharmacology
    Notes:
    Abstract Equations are derived for the evaluation of the contribution to the electric dipole vibronic intensity of d-d and f-f transitions in octahedral complex ions. Expressions for the evaluation of the crystal-field and ligand polarization terms and the cross term between are presented in symmetry adapted form and tables of the required coupling constants are given.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00526421

    Articles: DFG German National Licenses